Ray, tried the bottle on the end of a Metrovac to muffle the sound. Works well. I used an app on my phone to measure the decibels from the vac, and had a reduction of almost 10 decibels. This is about half the perceived volume. I am still going to wear ear protection, to keep the tinnitus from getting worse. Now all I need to do is get the cyclone hooked up and get back to sawing.
Tom